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In Lomas 2025 et al., on DPO and dorsolateral subluxation, what percentage of hips had a post-DPO DLS score <55%, indicating higher OA risk?

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Correct. Only 5 of 45 hips had a post-op DLS <55%, suggesting the majority were low risk for OA development.
Incorrect. The correct answer is 11%.
Only 5 of 45 hips had a post-op DLS <55%, suggesting the majority were low risk for OA development.

🔍 Key Findings

  • DPO significantly improved femoral head coverage, increasing mean DLS from 36.1% to 71.4% postoperatively (p < 0.001).
  • No significant change in DLS between immediate postoperative and follow-up scans, suggesting stable surgical outcomes over time.
  • Greater plate angle (30°) yielded larger DLS improvement (mean increase: 39.8%) compared to 25° and 20° plates.
  • Only 3 hips had post-op DLS scores <55%, indicating most patients had lower risk of osteoarthritis progression.
  • No correlation found between DLS improvement and age, body weight, or side of surgery, suggesting broad applicability.
  • CT was used for DLS measurement in simulated weight-bearing, improving precision over radiographic methods.
  • Major limitations included small sample size, multiple surgeons, and variable sedation vs anesthesia during imaging.
  • DPO confirmed as effective for reducing dorsolateral subluxation, improving coxofemoral joint congruency in dysplastic dogs.

Lomas

Veterinary and Comparative Orthopaedics and Traumatology

2

2025

The Impact of Double Pelvic Osteotomy on Dorsolateral Subluxation in 24 Dogs

2025-2-VCOT-lomas-4

Article Title: The Impact of Double Pelvic Osteotomy on Dorsolateral Subluxation in 24 Dogs

Journal: Veterinary and Comparative Orthopaedics and Traumatology

In Crystal 2024 et al., on elbow osteotomies, how did opening wedge osteotomies compare to external rotational osteotomies in reducing medial compartment load?

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Correct. Opening wedge osteotomies were more effective at reducing medial load (adjustment value 7.26, p = 0.045).
Incorrect. The correct answer is More effective.
Opening wedge osteotomies were more effective at reducing medial load (adjustment value 7.26, p = 0.045).

🔍 Key Findings Summary

  • Ex vivo cadaver study using 5 paired canine thoracic limbs
  • Compared medial opening wedge osteotomy (MOWO) and external rotational osteotomy (ERO) of the humerus
  • Measured pressure changes in the medial compartment using thin-film sensors
  • ERO significantly reduced peak pressure and pressure distribution in the medial elbow compartment (p < 0.05)
  • MOWO showed no significant pressure reduction relative to native state
  • Combined MOWO + ERO did not significantly improve over ERO alone
  • Findings support the biomechanical rationale for ERO as a surgical strategy to offload the medial compartment in cases like medial compartment disease (MCD)

Crystal

Veterinary and Comparative Orthopedics and Traumatology

4

2024

Effect of Medial Opening Wedge and External Rotational Humeral Osteotomies on Medial Elbow Compartment Pressure: An Ex Vivo Study

2024-4-VCOT-crystal-3

Article Title: Effect of Medial Opening Wedge and External Rotational Humeral Osteotomies on Medial Elbow Compartment Pressure: An Ex Vivo Study

Journal: Veterinary and Comparative Orthopedics and Traumatology

In Davies 2024 et al., on lymphaticovenous anastomosis, what intervention resolved partial occlusion of the thoracic duct after MAC coupling in one cat?

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Correct. Twisting of the TD was corrected by anchoring it with a tacking suture.
Incorrect. The correct answer is Tacking suture between TD and thoracic wall.
Twisting of the TD was corrected by anchoring it with a tacking suture.

🔍 Key Findings

  • Lymphaticovenous anastomosis (TD to AV) was successfully performed in all 8 feline cadavers using a microvascular anastomotic coupler (MAC).
  • Anastomotic patency was confirmed intraoperatively and postoperatively in 7/8 cats via contrast lymphography or retrograde venography.
  • Dissection and anastomosis took a median of 120 minutes, with minimal technical complications.
  • A 1.5 mm MAC was used in 6 cats, and a 2.0 mm in 2 cats; TD diameter ranged 1.0–1.5 mm, AV up to 2.25 mm.
  • Challenges included vessel twisting and luminal patency issues, resolved intraoperatively with minor adjustments (e.g., repeat pinning, tacking suture).
  • MAC use eliminated need for hand-suturing, lowering skill demands but requiring precise alignment.
  • Technique provides direct lymphatic-to-venous drainage, potentially reducing the stimulus for collateral vessel formation.
  • May serve as a future treatment option for feline idiopathic chylothorax, warranting further in vivo studies.

Davies

Veterinary Surgery

7

2024

Lymphaticovenous anastomosis of the caudal thoracic duct to the azygous vein: A feline cadaver study

2024-7-VS-davies-3

Article Title: Lymphaticovenous anastomosis of the caudal thoracic duct to the azygous vein: A feline cadaver study

Journal: Veterinary Surgery

In Jeong 2025 et al., on contoured saw guide vs jig, what was observed regarding *surgical time*?

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Correct. Both device application and osteotomy time were statistically similar (p > .05).
Incorrect. The correct answer is No difference in device or osteotomy time was found..
Both device application and osteotomy time were statistically similar (p > .05).

🔍 Key Findings

  • TPLO with the contoured saw guide achieved more accurate osteotomy angles for both inclination and torsion in bone models and cadaveric limbs (p < .05).
  • Medial cortical damage was significantly lower with the contoured guide (247 vs. 1866 pixels in bone models; p < .001).
  • No significant difference in eccentricity (distance between actual and intended osteotomy center) was found between groups.
  • Postoperative tibial plateau angle (TPA) was similar between groups (6.4° vs. 7.6°; p = .15), though both were slightly higher than the target of 6°.
  • Deviation in medial mechanical proximal tibial angle (mMPTA) showed no significant group difference; valgus deformity occurred in both.
  • Osteotomy and device application times were similar between the contoured guide and jig-assisted TPLO.
  • The contoured guide eliminated the need for proximal jig pin, potentially reducing intra-articular pin risk.
  • The guide's multiple pin fixation system improved stability and alignment, supporting safer osteotomy on curved tibial surfaces.

Jeong

Veterinary Surgery

7

2025

Evaluation of a contoured saw guide for tibial plateau leveling osteotomy in dogs

2025-7-VS-jeong-5

Article Title: Evaluation of a contoured saw guide for tibial plateau leveling osteotomy in dogs

Journal: Veterinary Surgery

In Zann 2023 et al., on proximal humeral OC surgery, which imaging modality showed significantly greater lesion size measurements?

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Correct. CT consistently showed wider and deeper lesion measurements than radiography (P = .001 width, P = .038 depth).
Incorrect. The correct answer is Computed tomography (CT).
CT consistently showed wider and deeper lesion measurements than radiography (P = .001 width, P = .038 depth).

🔍 Key Findings

  • All dogs developed progressive osteoarthritis (OA) after surgical debridement of proximal humeral OC.
  • Ipsilateral muscle atrophy and reduced shoulder range of motion were common, particularly in unilaterally affected dogs.
  • Arthroscopically, lesions showed incomplete cartilage infilling even years after surgery, averaging only ~37% infilling.
  • Synovitis was present in all joints, with moderate-to-severe hypertrophy and vascularity scores.
  • CT identified OC lesions as deeper and wider than radiography, and all affected joints had more advanced OA than contralateral limbs (P = .001 radiograph, P = .005 CT).
  • Kinetic gait analysis showed no significant differences in peak vertical force or impulse, but a subtle 4.4% asymmetric load reduction on the operated limb.
  • Median LOAD score was 6, indicating mild owner-perceived disability despite measurable clinical and imaging abnormalities.
  • Cartilage infilling was incomplete in all cases, with no lesion exceeding 60% restoration, raising questions about the healing potential of debridement alone.

Zann

Veterinary Surgery

6

2023

Long-term outcome of dogs treated by surgical debridement of proximal humeral osteochondrosis

2023-6-VS-zann-4

Article Title: Long-term outcome of dogs treated by surgical debridement of proximal humeral osteochondrosis

Journal: Veterinary Surgery

In McClean 2025 et al., on shoulder arthrocentesis techniques, what proportion of SA injections resulted in cartilage injury (IACI)?

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Correct. Half of the SA injections resulted in iatrogenic cartilage injury.
Incorrect. The correct answer is 50%.
Half of the SA injections resulted in iatrogenic cartilage injury.

🔍 Key Findings

  • Study Type: Cadaveric study using 36 paired canine shoulders (n = 18 per group: Subacromial [SA] and Supratubercular [ST])
  • Survey Results: 75% of clinicians preferred SA technique; 25% used ST
Accuracy Outcomes:
  • Complete accuracy: 50% (SA), 44% (ST) — no significant difference (p = .8)
  • Partial accuracy: 39% (SA), 50% (ST)
  • Complete miss: 11% (SA), 5.6% (ST)
Safety Outcomes (India Ink Assay for Iatrogenic Articular Cartilage Injury [IACI]):
  • Incidence of IACI:
    • SA: 50% (9/18 shoulders)
    • ST: 11% (2/18 shoulders) → statistically significant (p = .007)
  • Lesion depth: All ST lesions were partial-thickness; SA group had one full-thickness lesion (p = .027)
  • Location: Lesions found on glenoid and humeral head with even distribution in SA; only one each in ST
Clinical Implications:
  • Landmark-guided injections were ≤50% completely accurate, even by an experienced operator.
  • ST technique is safer with lower risk of cartilage damage, despite similar accuracy.
  • Findings support considering image-guided techniques to improve both safety and accuracy in clinical settings.

Mcclean

Veterinary Surgery

4

2025

Accuracy and safety of two landmark‐guided techniques for arthrocentesis and intra‐articular injection of the shoulder in dogs

2025-4-VS-mcclean-4

Article Title: Accuracy and safety of two landmark‐guided techniques for arthrocentesis and intra‐articular injection of the shoulder in dogs

Journal: Veterinary Surgery

In Griffin 2025 et al., on sentinel lymph mapping, what protocol change improved SLN visualization intraoperatively?

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Correct. Injecting a lower volume after cervical exposure helped prevent dye dispersion and improved SLN detection.
Incorrect. The correct answer is Post-exposure injection with smaller volume.
Injecting a lower volume after cervical exposure helped prevent dye dispersion and improved SLN detection.

🔍 Key Findings

  • Six dogs with thyroid carcinoma underwent preoperative CT lymphography (CTL) and intraoperative sentinel lymph node (SLN) mapping using methylene blue (MB) and indocyanine green (ICG) with near-infrared (NIR) imaging.
  • SLNs were successfully identified in all dogs (6/6).
  • SLNs included medial retropharyngeal, cranial deep cervical, and superficial cervical nodes.
  • Metastatic carcinoma was found in 3/12 SLNs, in 2/6 dogs.
  • Some discordance occurred between CTL and intraoperative SLN findings (partial match in 3/6).
  • Protocol modifications (e.g., reduced dye volume, post-exposure injection) improved localization and minimized dye diffusion.
  • No intraoperative complications or adverse events occurred.
  • Study supports further investigation of combined SLN mapping techniques in canine thyroid cancer.

Griffin

Veterinary Surgery

4

2025

A combination of pre‐ and intraoperative techniques identifies sentinel lymph nodes in dogs with thyroid carcinoma: A pilot study

2025-4-VS-griffin-4

Article Title: A combination of pre‐ and intraoperative techniques identifies sentinel lymph nodes in dogs with thyroid carcinoma: A pilot study

Journal: Veterinary Surgery

In Marshall 2022 et al., on fracture healing outcomes, what was the **prevalence of non-union** among the 461 fractures reviewed?

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Correct. The authors reported non-union in 21 of 461 fractures (4.6%).
Incorrect. The correct answer is 4.6%.
The authors reported non-union in 21 of 461 fractures (4.6%).

🔍 Key Findings

  • Delayed union occurred in 13.9% of fractures; non-union in 4.6%; mal-union in 0.7%
  • Major implant failure increased odds of delayed or non-union by 12.9×
  • Surgical site infection increased risk 3.2×; bone grafting (any type) was also associated (OR 3.3)
  • Comminuted fractures had 4.2× greater odds of delayed or non-union
  • Older age increased risk, with odds increasing by 21% per year
  • Radius and ulna fractures in toy breeds were not high risk, contrary to historical belief
  • Most non-unions required revision surgery with rhBMP-2 or autograft to achieve union
  • Ilium fractures showed 0% delayed/non-union — possibly due to robust muscle envelope

Marshall

Veterinary Surgery

7

2022

Delayed union, non-union and mal-union in 442 dogs

2022-7-VS-marshall-3

Article Title: Delayed union, non-union and mal-union in 442 dogs

Journal: Veterinary Surgery

In Socha 2024 et al., what was the statistical significance of the difference in T2*L values between CrCL and CdCL?

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Correct. The study reported p = 0.03 for CrCL vs CdCL T2*L comparison, indicating statistical significance:contentReference[oaicite:1]{index=1}
Incorrect. The correct answer is p = 0.03.
The study reported p = 0.03 for CrCL vs CdCL T2*L comparison, indicating statistical significance:contentReference[oaicite:1]{index=1}

🔍 Key Findings Summary

  • Normative ultrashort echo time (UTE) MRI T2* values were established for:
    • Patellar ligament (PL): T2*L = 4.65 ms
    • Cranial cruciate ligament (CrCL): T2*L = 5.99 ms
    • Caudal cruciate ligament (CdCL): T2*L = 7.06 ms
  • Statistically significant differences in T2*L values were found between:
    • PL vs. CrCL (p = 0.03)
    • PL vs. CdCL (p = 0.0097)
    • CrCL vs. CdCL (p = 0.03)
  • No significant differences in short T2* (T2*S) values across ligaments.
  • Study highlights potential of UTE MRI to detect early ligament changes even without physical instability.
  • May guide early diagnosis in partial CrCL rupture where standard MRI is limited.

Socha

Veterinary and Comparative Orthopedics and Traumatology

2

2024

Ultrashort Echo Time Quantitative Magnetic Resonance Imaging of the Cruciate Ligaments in Normal Beagles

2024-2-VCOT-socha-2

Article Title: Ultrashort Echo Time Quantitative Magnetic Resonance Imaging of the Cruciate Ligaments in Normal Beagles

Journal: Veterinary and Comparative Orthopedics and Traumatology

In Adams 2024 et al., on canine tibial plateau fractures, what surgical construct was used for the medial TPF in Case 3?

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Correct. Medial TPF in Case 3 was repaired using two 0.9 mm K-wires and a figure-of-eight tension band wire.
Incorrect. The correct answer is Two 0.9 mm K-wires with tension band wire.
Medial TPF in Case 3 was repaired using two 0.9 mm K-wires and a figure-of-eight tension band wire.

🔍 Key Findings

  • Tibial plateau fractures (TPF) are rare in dogs, but can be surgically stabilized with good outcomes even in complex trauma cases.
  • Lateral TPFs (Unger type 41-B1) were approached via caudolateral arthrotomy, with elevation of the lateral meniscus for visualization and use of lag screws and K-wires for fixation.
  • Medial TPF (Unger type 41-B2) was addressed via medial parapatellar approach using K-wires and a figure-of-eight tension band.
  • One minor complication occurred: implant yield at 2 weeks in a case with a concurrent fibular fracture, resulting in a 0.8 mm step defect.
  • No major complications were recorded, and all dogs achieved clinical union with full function by 8–10 weeks.
  • Long-term owner-reported outcomes (LOAD scores) were excellent (5/52), indicating minimal osteoarthritis or chronic pain.
  • Concurrent fibular fractures may increase risk of implant failure and should influence implant selection (e.g., considering buttress plating).
  • Arthroscopic-assisted techniques may be applicable in select cases, but open reduction was preferred due to fragment displacement or concurrent injuries.

Adams

Veterinary Surgery

6

2024

Prospective evaluation of the surgical stabilization and outcome of canine tibial plateau fractures in three cases

2024-6-VS-adams-1

Article Title: Prospective evaluation of the surgical stabilization and outcome of canine tibial plateau fractures in three cases

Journal: Veterinary Surgery

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